jdkaplan/advent-of-code
Watch
1
0
Fork
You've already forked advent-of-code
 0
Code Issues Activity

Rename pc to ip to match instructions

Browse source
This commit is contained in:
Jeremy Kaplan 2019-12-05 23:03:18 -08:00
commit 28d32820fc
1 changed files with 31 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

62
2019/day5/intcode.rb
View file

@ -39,83 +39,83 @@ module Intcode
def run
@mem = Memory.new(@initial_state.clone)
pc = 0
ip = 0
loop do
opcode = operation(mem[pc])
mode = modes(mem[pc])
opcode = operation(mem[ip])
mode = modes(mem[ip])
case opcode
when 1
r1 = mem[pc + 1]
r2 = mem[pc + 2]
r3 = mem[pc + 3]
r1 = mem[ip + 1]
r2 = mem[ip + 2]
r3 = mem[ip + 3]
a = param(r1, mode[0])
b = param(r2, mode[1])
raise StandardError, "unexpected mode: #{mode[2]}" if mode[2] != 0
mem[r3] = a + b
pc += 4
ip += 4
when 2
r1 = mem[pc + 1]
r2 = mem[pc + 2]
r3 = mem[pc + 3]
r1 = mem[ip + 1]
r2 = mem[ip + 2]
r3 = mem[ip + 3]
a = param(r1, mode[0])
b = param(r2, mode[1])
raise StandardError, "unexpected mode: #{mode[2]}" if mode[2] != 0
mem[r3] = a * b
pc += 4
ip += 4
when 3
r1 = mem[pc + 1]
r1 = mem[ip + 1]
raise StandardError, "unexpected mode: #{mode[0]}" if mode[0] != 0
mem[r1] = input
pc += 2
ip += 2
when 4
r1 = mem[pc + 1]
r1 = mem[ip + 1]
output = param(r1, mode[0])
puts "output: #{output}"
pc += 2
ip += 2
when 5
r1 = mem[pc + 1]
r2 = mem[pc + 2]
r1 = mem[ip + 1]
r2 = mem[ip + 2]
a = param(r1, mode[0])
b = param(r2, mode[1])
if !a.zero?
pc = b
ip = b
else
pc += 3
ip += 3
end
when 6
r1 = mem[pc + 1]
r2 = mem[pc + 2]
r1 = mem[ip + 1]
r2 = mem[ip + 2]
a = param(r1, mode[0])
b = param(r2, mode[1])
if a.zero?
pc = b
ip = b
else
pc += 3
ip += 3
end
when 7
r1 = mem[pc + 1]
r2 = mem[pc + 2]
r3 = mem[pc + 3]
r1 = mem[ip + 1]
r2 = mem[ip + 2]
r3 = mem[ip + 3]
a = param(r1, mode[0])
b = param(r2, mode[1])
raise StandardError, "unexpected mode: #{mode[2]}" if mode[2] != 0
mem[r3] = a < b ? 1 : 0
pc += 4
ip += 4
when 8
r1 = mem[pc + 1]
r2 = mem[pc + 2]
r3 = mem[pc + 3]
r1 = mem[ip + 1]
r2 = mem[ip + 2]
r3 = mem[ip + 3]
a = param(r1, mode[0])
b = param(r2, mode[1])
raise StandardError, "unexpected mode: #{mode[2]}" if mode[2] != 0
mem[r3] = a == b ? 1 : 0
pc += 4
ip += 4
when 99
return mem[0]
else